Prime Inspection Backflow in Frisco, TX has a team of trained testers who are licensed and highly highest level of certification for fire sprinkler systems, We, at Prime Inspection, have extensive knowledge experienced in installing, testing, and repairing both residential and commercial Backflow valves. The RME-G license is the and experience in the field of fire safety and sprinkler systems. The SCR-G is a certification that is required for contractors to work with fire protection sprinkler systems.